Problem: You are given three numbers. Is there a way to replace variables A, B and C with these numbers so the equality A + B = C is correct?

Input:

There are three numbers X1, X2 and X3 (1 ≤ Xi ≤ 10^100), each on a separate line of input.

Output:

Output either "YES", if there is a way to substitute variables A, B and C with given numbers so the equality is correct, or "NO" otherwise.

Sample Input:

1

2

3

Output:

YES

Sample Input:

1

2

4

Output

YES

Sample Input:

1

3

5

Output

NO

SAMPLE INPUT
1
2
3

SAMPLE OUTPUT
YES

Solution (in PYTHON):

Solution:
n1 = int(raw_input())
n3 = int(raw_input())
n2 = int(raw_input())


if n1+n2 == n3 or n1+n3 == n2 or n2+n3 == n1:
	print "YES"
elif 2*n1 == n2 or 2*n1 == n2 or 2*n2 == n1 or 2*n2 == n3 or 2*n3 == n1 or 2*n3 == n2:
	print "YES"
else:
	print "NO"